On Thu, 14 Mar 2013, Soeren Moch wrote:

quoted

quoted

I added a debug message to
drivers/usb/host/ehci-sched.c:itd_urb_transaction() to log the
allocation flags, see log below.

But it looks like you didn't add a message to end_free_itds(), so we
don't know when the memory gets deallocated.  And you didn't print out
the values of urb, num_itds, and i, or the value of itd (so we can
match up allocations against deallocations).

OK, I will implement this more detailed logging. But with several 
allocations per second and runtime of several hours this will result in 
a very long logfile.

If the memory really is being leaked here in some sort of systematic
way, we may be able to see it in your debugging output after a few
seconds.

Alan Stern